Calculator
What the Retirement Calculator does
Retirement Calculator: calculates Total Corpus, Total Invested and Gains from Monthly Contribution, Expected Return and Years to Retirement. Example: monthly contribution 5000 ₹, expected return 10 % p.a. and years to retirement 25 gives total corpus ₹66,89,451.74.
Total Corpus, Total Invested and Gains, derived from Monthly Contribution, Expected Return, Years to Retirement and Annuity Purchase %. The result recalculates on every keystroke without a button press or a page reload.
It is mostly used by people planning a budget. Lenders present the same deal in different ways, so a like-for-like number is worth having.
The page holds your values in memory and forgets them the moment you close it.
If you want to check the arithmetic, the field table, the method and a worked example are further down.
What do the Retirement Calculator fields mean?
The Retirement Calculator uses 5 inputs. The defaults are there to be replaced. They exist so the tool is never showing an empty result.
| Field | What to enter | Default |
|---|---|---|
| Monthly Contribution | measured in ₹; accepts 500 to 500000 | 5000 |
| Expected Return | measured in % p.a.; accepts 1 to 15 | 10 |
| Years to Retirement | accepts 1 to 40 | 25 |
| Annuity Purchase % | accepts 40 to 100 | 40 |
| Annuity Rate % p.a. | accepts 1 to 12 | 6 |
How does the Retirement Calculator work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same calculation.
Range checks come first, so the formula only ever sees values it can handle.
Worked example
These are the values the Retirement Calculator loads by default, and the result it produces from them. These are the tool’s own default values and the result they produce, not an invented illustration.
| Monthly Contribution | 5000 ₹ |
|---|---|
| Expected Return | 10 % p.a. |
| Years to Retirement | 25 |
| Annuity Purchase % | 40 |
| Annuity Rate % p.a. | 6 |
| Total Corpus | ₹66,89,451.74 |
|---|---|
| Total Invested | ₹15,00,000.00 |
| Gains | ₹51,89,451.74 |
| Lumpsum Withdrawal | ₹40,13,671.04 |
| Used for Annuity | ₹26,75,780.70 |
| Est. Monthly Pension | ₹13,378.90 |
How to use it
- Fill in Monthly Contribution in ₹ (500 to 500000).
- Type Expected Return in % p.a. (1 to 15).
- Enter Years to Retirement (1 to 40).
- Set Annuity Purchase % (40 to 100).
- Put Annuity Rate % p.a. (1 to 12).
- Live output means you can search for a target value by nudging an input up and down.
- The panel reports Total Corpus, Total Invested, Gains, Lumpsum Withdrawal, Used for Annuity and Est. Monthly Pension.
- Both Copy Link and Print capture the current state, so pick whichever suits how you file things.
What this tool does not do
- Fees, processing charges and taxes are not included unless there is a field for them.
- Lender rounding conventions differ, so your statement may vary by small amounts.
- It assumes the values you give are already consistent with each other.
- The tool cannot tell whether a number was entered in the unit you intended, so double-check the labels.
Frequently asked questions
Enter Monthly Contribution in ₹ and Expected Return in % p.a.. The unit is shown beside each box, and the result carries its own label, so there is nothing to convert by hand.
Monthly Contribution accepts 500 to 500000 ₹. If a value falls outside, the tool says which field is at fault instead of guessing.
With the values loaded when the page opens, total corpus comes out as ₹66,89,451.74. It recalculates the moment an input changes, which makes comparing scenarios quick.
Not at all: the whole thing runs offline once the page has loaded, which tells you nothing is being sent.
It costs nothing, and there is no limit on repeat use.
The formula is standard and the output is exact. Use it to compare scenarios against each other rather than to predict a specific figure on a specific statement.